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Mention the principles of concentration of ore for various mehtods.

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Hydraulic washing: Differences in the densities of the ore and gangue particles.
Froth floatation process: Different wetting tendencies of the ore and gangue particles with oil and water.
Electromagnetic separation : Different magnetic properties of the ores and gangue.
Chemical separation : Difference in some chemical property of the metal compound present in the ore and the gangue.
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MTG IIT JEE FOUNDATION-METALS AND NON METALS -Olympiad/HOTS Corner
  1. Mention the principles of concentration of ore for various mehtods.

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  2. Metals are extracted from their ores by different methods depending on...

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  3. Metals are extracted from their ores by different methods depending on...

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  4. Which one of the following oxides gives pink colour with phenolphthale...

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  5. Solder is an alloy of

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  6. The given apparatus shows the reaction of steam with heated solid 'X'....

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  7. Observe the given figure carefully. For which pair of metals woul...

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  8. Which gas is released when a metal reacts with an acid ?

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  9. When in the blue solution of Copper sulphate zinc strip is dipped, aft...

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  10. Extraction of highly electropositive metal is done by

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  11. Some properties of substances P, Q, R and S are given in the table : ...

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  12. Match column-I with column-II and select the correct option using the ...

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  13. Ms. Neelam, a class 10 teacher took Cu, Al, Pb and Zn strips respecti...

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  14. Which reagent is able to dissolve gold and platinum ?

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  15. Amalgam is

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  16. A few chemical properties of three metals X, Y and Z are summarised in...

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  17. Mitaali, a class 10 student wanted to study the speed of reactions of ...

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  18. A metal rod M was dipped in a coloured solution Y. After some time it ...

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  19. is a non-metal but is lustrous.

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  20. Main objective of smelting of ore is

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  21. A metal X is placed below Al and above Pb, in activity series. The ext...

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